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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-K12-679-5
Xtreme Energy Mechanical Flat Camshaft Complete Kit Lift: .540"/.558"
$79795
Ships on 10/19/2026
Lowest Price GuaranteeChevy Small Block 265-400ci 1955-98
- Xtreme Energy Mechanical Flat Camshaft Complete Kit
- Lift: .540"/.558"
- Duration: 290°/298°
- Lobe Separation Angle: 110°
- RPM Range 2800-7200
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10
Pro street/bracket, needs good intake, headers, gear and 3300+ stall.
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height5.3
Package Width10.5
Package Length25.2
Weight23.05 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)260
Cam StyleMechanical flat tappet
Grind NumberCS XS290S-10
Exh. Duration Advertised (Deg)276
Locks IncludedYes
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.54
Int. Duration @ .050 In. (Deg)252
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,800-7,200
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.016 in (0.406 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.51 in (12.954 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)270
Lobe Separation (Deg)110
Rpm Range2700-6400
Lifter StyleMechanical flat tappet
Advertised Duration290 int./298 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.558
Valve Springs IncludedYes
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.540 int./0.558 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lash0.016 in (0.406 mm)
Exhaust Valve Lift0.51 in (12.954 mm)
Advertised Intake Duration290
Outside Diameter Of Outer Spring1.43 in (36.3 mm)
Intake Duration At 050 Inch Lift252
Exhaust Duration At 050 Inch Lift260
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration298
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift252 int./260 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK12-679-5
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
